What is the default number of check_runners in Datadog?

The default number of check_runners in Datadog is set to four. This configuration allows for a balance between performance and resource utilization when running scheduled checks on your monitored systems. Each check_runner is responsible for executing checks, which are plugins that collect data on various aspects of systems and applications. Having four check_runners provides sufficient parallelism to handle multiple checks concurrently, thereby ensuring timely data collection without overwhelming the system's resources.

This setting is designed to optimize efficiency in environments with diverse monitoring needs, allowing for effective management of workload while maintaining high responsiveness from the monitoring service.